Weather statistics using structure

[prettyknitty]

I have been working on this for awhile, but I was hoping to get input from someone with more experience.
I have to stick with the structure and enum format for the assignment, but I was wondering if anyone had any opinions on the way the high/low temperature sections should be done?
Thanks for your help, I appreciate any hints.

#include <iostream>
#include <string>
#include <iomanip>

using namespace std;

struct WeatherInfo
{
    double rainfall;
    double highTemp;
    double lowTemp;
 };
    
enum Month {January, February, March, April,
                May, June, July, August,
                September, October, November, December};
                             

int main()
 {
    const int MONTHS = 3;
    WeatherInfo month[MONTHS];
    int index;
    
    double rainTotal = 0.0;
    double tempTotal = 0.0;
    double tempHigh = 0.0;
    double tempLow = 0.0;

    for (index = January; index <= March; index = static_cast<Month>(index +1))
     { 
		cout << "Please enter the rainfall in inches";
		cout << (index + 1) << " :";
		cin >> month[index].rainfall;
		rainTotal += month[index].rainfall;
		
		cout << "Please enter the temperature";
		cout << (index + 1) << " :";
		cin >> tempTotal;
            
            if ( tempTotal < -100 || tempTotal > 140) 
            { 
                cout << "The temperature you entered is invalid" << endl; 
                cout << "Please re-enter: "; 
                cin >> tempTotal; 
            } 
            
            if (month[index] > tempTotal)
		{
			tempHigh += month[index].highTemp;
		}
		
		 if (month[index] < tempTotal)
		{
			tempLow += month[index].lowTemp;
		}
		
    }

    cout << "The total rainfall for the year is " << rainTotal << endl; 
	cout << "The highest temperature is " << tempHigh << endl;
	cout << "The lowest temperature is " << tempLow << endl;
	    
return 0;

}

[JockX]

I dont quite get it, and it looks like you too are undecided:
What WeatherInfo object represents?
If you need statistics for 3 months, do you create one WeatherInfo for each month, or there is just one WeatherInfo for entire period? Because you measure rainfall independently in each of 3 WeatherInfo's . That would mean you need also provide coldest and warmest temperature for each of three months, correct?
Or maybe each month can only have one temperature?

WeatherInfo
{
    double rainfall;
    double temp;
}

And then the function should only calculate average of the 3, compare them to one another and find min and max values?